3 design basis

3.1 Geographical position

Shanghai latitude: 31 ° 11 'north latitude and longitude: east longitude 121 ° 29'

3.2 meteorological parameter

3.2.1 outdoor design parameters:

(1) atmospheric pressure: 101.57 Kp

(2) outdoor calculated (dry bulb) temperature (℃) : as shown in table 1.1

(3) indoor design parameters: see table 1.2

Table 1.1 outdoor calculated (dry bulb)temperature (℃)

        (dry bulb)                 wet bulb      

      temperature (℃)           temperature (℃)  

Winter       -4                  —            

Summer      34                 28.2          

Table 1.2 interior design parameters

        (dry bulb)          relative humidity       New wind volume

      temperature (℃)              (%)                  (m²/h*P)

Winter       -4               —                20

Summer      34              75                20

3.3 summer air-conditioning outdoor calculated wet bulb temperature (℃) : 28.2

3.4 design specifications

[1] Design Code for Heating, Ventilation and Air Conditioning(GB50019-2003)

[2] Code of Fire Protection for Civil Building Design(GBJ16-87-2001)

[3] Technical Regulations for the Prevention of Smoke Exhaust in Civil Buildings(DGJ08-88-2000)

[4] Energy Conservation Design Standards for Public Buildings(DGJ08-107-2004)

[5] Specification for Quality Acceptance of Construction of Ventilation and Air Conditioning Works(GB50243-2002)

[6] Design Code for Heating, Ventilation and Air Conditioning in Civil Buildings （GB50736-2012）

[7] HVAC Drawing Standard(GB/T50114-2001)

[8] Glossary Standard for Heating, Ventilation and Air Conditioning(GB50155-92)

[9] Yangchangzhi, "Design Methods and System Analysis of HVAC Engineering" China Construction Press

[10] "Technical Measures for the Design of Civil Construction Engineering in China-HVAC Power"

[11] Chenchao "Curriculum Design. Graduation Design Guide" China Construction Publishing House

4 The main work of design

The task of this design is to design the air-conditioning system of the shopping mall based on the basic theory and professional knowledge learned, combined with actual projects, so that the parameters such as temperature and humidity in the room and the airflow organization meet the requirements for use.

The main contents of the design include: calculating the hot, cold and wet loads in the air conditioning rooms in summer and winter; Determine the air conditioning design, air conditioning system process analysis, including enthalpy wet icon; Calculation of air treatment equipment selection; The calculation of air flow in air conditioning rooms; (a) Hydraulic calculations; Selection and calculation of cold and heat source equipment; Draws the design of the air conditioning.

5 Choice of air-conditioning system

According to the characteristics of the building's function and structure, the comfort of the indoor environment, the convenience of operation and energy conservation, and the economy of the equipment, the layout of the building adopts the air conditioning system of the entire air system. According to the different air supply status points, a combined air treatment unit that meets the requirements is set up in each air conditioning room, and the new wind is introduced into the air treatment unit through the wall hole.